Locomotive structure



Jul 24, 1928.

H. M. PFLAGER LOCOMOTIVE STRUCTURE Filed Au 30, 1926 'Illllllfr Patented July 24, 1928.

UNITED STATES PATENT OFFICE.

HARRY M. I'FLAGER, OF ST. LOUIS, MISSOURI, ASSIGNOR TO COMMONWEALTH STEEL COMPANY, OF GRANITE CITY, ILLINOIS, A CORPORATION OF NEW JERSEY.

LOCOMOTIVE STRUCTURE.

Application filed August 30, 1926. Serial No. 132,509.

My invention relates to railway rolling stock and consists in improvements in the construction of locomotive cylinders and steam chests or piston valves, and in the adjacent portion of the locomotive bed.

One of the objects of my invention is to reduce the expense of machining the parts mentioned and the heads, brackets, and othei elements, which machining is usually necessary when the parts are to be assembled with each other as hasbeen the case heretofore.

Another object of my invention is to avoid leakage between the cylinders and steam chests and their heads, and to eliminate the necessity of renewing the packing between these members at intervals.

Another object of my invention is to reinforce the cylinder and steam chest heads and brace the brackets mounted thereon.

The above-mentioned objects are attained by the integral formation of two or more of the parts and preferably by combining these parts in a single casting.

In the accompanying drawings which illustrate my invention,-

Figure 1 is a. vertical longitudinal section through a locomotive steam cylinder and a steam supply member and a portion of the adjacent locomotive bed embodying the features of my invention.

Figure 2 is a vertical transverse section taken on line 2-2 of Figure 1.

Figure 3 is'a fragmentary top view of the bracket elements illustrated in Figure 1.

Figure 4 is an end view of the structure shown in Figure 2 but illustrating a modification of my invention.

Figure 5 1s a fragmentary section through another mo i my invention.

The bed of the locomotive is indicated at 1 and at the portion adjacent the steam cylinder comprises a box-shaped section having steam cylinders 2, formed integrally with the side walls thereof and having suitable integral elements 3 and 4 forming steam exhaust passages and a boiler supporting saddle. A steam chest of the piston valve type is indicated at 5 and is formed integrally with the cylinder- 2. The cylinder 2 and steam chest 5 each has a head 6 and 7, re-- longitudinal fied form of spectively, formed integrally with the side walls of the respective members, and projecting outwardly from head 6 are integral brackets 8 for guiding the cross head, and pro ect1n g outwardly from head 7 are integral brackets 9 for guiding the valve stem of the steam chest piston.

Suitable ribs 10 and 11 brace the brackets 8 and 9, respectively, and reinforce the heads 6 and 7.

In the modification illustrated in Figure 4 the cylinder '12 and steam chest 13 and boiler saddle 14 are formed integrally with each other but are mounted upon the side frames 15 of the locomotive instead of being formed integrally therewith as indicated in my preferred construction.

Figure 5 illustrates another modification of my'invention in which the cylinder head 16 pro ects inwardly of the sidewalls of the cylinder 17 to accommodate the V type of piston, and in this modification the steam chest brackets 18 are of a different form from those illustrated in Figure 1. In each of the forms of my invention the integral construction of the cylinder head and body is the main feature and may be adopted Without including the integral brackets for the cross head guide and valve stem and without making the cylinders integral with the boiler saddle .or locomotive bed. However, I prefer to embody all of these parts in a single casting although various parts could be made integrally by other means. In each form of my invention, the machining of the rear end of the cylinder and of adetachable head and the labor of assembling these parts is eliminated. The use of packing between the cylinder and its rear head is also eliminated and there will be no opportunity for leaks to develop at this point. 1

I contemplate the exclusive use of such variations in the details of my invention other than those referred to which utilize the spirit of my invention and which fall within the scope of my claims.

I claim:

1. In a cast steel steam chest for locomotives, a head formed integrally with the steam chest, a valve stem guide formed in.- tegrally with said head, and ribs integral with said head and guide for, reinforcing the same.

A locomotive bed casting including a cylinder provided with an integral head, andan integral cross head guide bracket.

tegrally formed heads.

5. In a locomotive bed casting, an integral steam cylinder and steam chest having integrally formed heads, and cross head guide brackets and valve stem guide brackets formed integrally with said heads.

6. A locomotive main frame member including a cylinder, a cylinder head and a cross head guide bracket all formed integrally.

7. A locomotive main frame member in eluding a steam chest and an integral valve stem guide all formed integrally.

8. Alocom'otive main frame member in- 20 eluding a steam cylinder and steam chest and a head for said chest all of said elements being formed integrally.

9. A locomotive main frame member includin a steam cylinder and steam chest, individual heads for said cylinder and chesta cross head bracket, and a valve stein guide bracket, all of said elements being formed integrally.

10. A locomotive main frame member having a cross head guide bracket formed integrall therewith.

11. locomotive main frame member having a valve stem therewith.

12. A locomotive main frame member having a cross head guide bracket and a. valve stem guide formed integrally therewith. In testimony whereof I hereunto aflix my signature this 26th day of August, 1926.

- H. M. PFLAGER.

guide formed integrally 

